Obtaining, analysing and evaluating results Flashcards
1
Q
How do we calculate the uncertainty of a measuring instrument?
A
(Instrument resolution/ Reading taken) x 100
E.g. A reading of 100cm on a 1cm ruler = (1/100)x 100=1% uncertainty
2
Q
What are random errors and 2 examples?
A
Errors made by the person carrying out the experiment
Most common errors:
- Reaction time errors
- Parallax errors
3
Q
What are Systematic errors?
A
Errors caused by faulty equipment usually when they have not been reset.
4
Q
What is the difference between repeatability and reproducibility?
A
Repeatability is how much your results vary and whether they are consistent.
Reproducibility is whether you can achieve the same conclusion/ similar results when reproducing the experiment either on a different time or with different people.
